001 /*
002 * Copyright 2001-2005 Stephen Colebourne
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 package org.joda.time.convert;
017
018 /**
019 * DurationConverter defines how an object is converted to a millisecond duration.
020 *
021 * @author Stephen Colebourne
022 * @author Brian S O'Neill
023 * @since 1.0
024 */
025 public interface DurationConverter extends Converter {
026
027 /**
028 * Extracts the millis from an object of this convertor's type.
029 *
030 * @param object the object to convert, must not be null
031 * @return the millisecond duration
032 * @throws ClassCastException if the object is invalid
033 */
034 long getDurationMillis(Object object);
035
036 }